Reed for looms.



PATBNTED JAN. 6,1903.

F, OTT. REED POR LOOMS. APjLIoATIoN FILED AUG. zo, 1902.

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REED FOR LOOVIS.

SPECIFICATION forming part of Letters Patent No. 717,905, dated January 6, 1903.

Application filed August 20, 1902. Serial N0 120,275. (No model.)

T0 @ZZ whom, t may concern:

Be it known that I, FREDERICK OTT, a citizen of the United States, residing at No. 17 Maple street, Woonsocket, in the county of Providence and State of Rhode Island, have `invented certain new and useful Improvements in Reeds forLooms, of which'the folowing is a specification, reference being had o the accompanying drawings.

mojreparticularly for the weaving of fabrics ne' texture; and it consists in arranging 1i dents in a-double row'in staggered relaito each other, the dents of the rear row g provided with projections or bosses 1ng the line where the lathe beats up against e filling. In this way, without lessening We capacity of the reed to beat the filling rptnly, I am able to very much decrease the -a "Ount of friction to which the warp-threads are' subjected by the action of the reed.

In the accompanying drawings, Figure 1 is a vertical longitudinal section of a reed containing my improvements, taken along the line 1 l, Fig. 3. set of dents. Fig. 3 is a vertical cross-section of the reed, showing the relation of the two sets of dents to each other. Fig. 4. shows one of the rear set of dents.

A A are the bars of lthe reed-frame.

ct is one of the front set of dents, its rear side being cut away, as shown in Fig. 2. b is one of the rear set of dents, in which the front edge is similarly cut away. It is furnished at the proper point with a projection or boss c. This projection is preferably rounded, as shown in the drawings; The two kinds ofdents are inserted into the reed-frame alternately. The cut-away portions are deep enough to create a clearance-space between the rows formed by the two sets of dents, eX- cept along the line where the two projections c of the rear set are situated. These projections reach at their apex to the plane of the front edges of the front set of dents.

Referring now to Fig. 3, it will be observed that as the lathe moves back and forth the threads during the4 greater part of the play of the reed are subjected to very little friction, because of the fact that the shed causes -zMy` improvement relates to a reed designed Fig. 2 shows one of the front the threads to pass between the dents Where the cut-away parts create a free clearancespace-that is, where the side of the one dent and the proximate side of the adjacent dents are not alongside of each other. As the lathe beats up against the filling the warp-threads as they approach each other occupy a position coincident to the row of bosses c. The bosses cause the rear set of dents to perform their function of driving the filling home `with as great evenness and accuracy as though all of the dents were in exact alinenient, as in the ordinary form of reed.

The usefulness of my invention will be especially apparent when consideration is given to `the amount of friction to which a knot or other enlargement in one of the warp-threads is necessarily subjected as the warps pass from the heddles to the take-uproller. Before the knot is out of reach of the friction of the reed and woven into the fabric it must have passed back and forth along the sides of the dents, between which it is threaded many hundreds of times, depending, ofcourse, upon the fineness of the texture of the fabric which is being woven. In a fine reed this causes a large amount of friction, fraying out the thread and often breaking it. By staggering the reeds, as shown in my invention, this friction is greatly diminished or done away with, and yet the presence of the bosses c upon the rear set of dents enables me to ob-` tain this advantageous result without sacrificing in any way the efficiency of the reed.

I am aware that a reed-frame having the dents in staggered relation to each other is not in itself new, and I therefore make no claim to this construction by itself.

What I claim as my invention is- 1. A reed-'frame having the dents arranged in two sets in staggered relation to each other, the dents of the rear set having forwardlyprojecting bosses, substantially asdescribed.

2. A reed-frame having the dents arranged in two sets in staggered relation to each other, the dents of the rear set having bosses which project forward to the plane of the front edges of the front set of dents, substantially as described.

3. A reed-frame having the dents arranged in two sets in staggered relation to' each other, plane at which the reed beats up against the the dents of the rear set having rounded lling, substantially as described.

bosses projecting forward to the plane of the In Witness WhereofI, FREDERICK OTT, have front edges of the front set of dents, substanhereunto signed my name, with two subscrib- I5 5 tially as described. ing Witnesses, this 16th day of August, A. D.

4. A reed in which the dents are alternately 1902.

cnt away on the front and rear sides so that l the Working portions thereof are in staggered relation to each other with a clearance-space I Witnesses: lo between; and bosses formed upon the front JOSEPH BROWN,

FREDERICK OTT.

side of the rearinost dents coincident with Ithe i HENRY ROUSSEAU. 

